The SQME gearless extruder motor replaces the motor, gearbox, belt and water-cooling circuit with a single compact unit — engineered for precise extrusion at full torque, from 0 to rated rpm.
97 %Peak efficiency
20,000 Nm*Maximum torque
0.1 RPMFull torque from 0.1 rpm to rated speed
NO GEARBOXNo belt drive. No water cooling.
* Up to 20,000 Nm with SQME NEW. Please contact EMF for your specific torque requirement.
A conventional extrusion drive chain multiplies the losses of each stage. Belts slip, gearboxes heat up, pumps consume power. The SQME removes the entire chain — one motor, directly on the screw.
=86.3 % motor + transmission efficiency (excl. drive)
→SQME direct drive: up to 96 % motor efficiency (SQME 250 SE)
Assumptions: IE3 minimum efficiency per IEC 60034-30-1 (45 kW, 4-pole, 50 Hz); typical catalogue values for a V-belt drive and a two-stage helical gearbox. The geared system's 0.5 kW oil/cooling pump is not included. At reduced speed the gap widens — see the measured efficiency curves below.
02 — EMF Motor Technology
One motor.Five promises.
Hover the panels — each one is a design decision that removes hardware, cost and failure points from your line.
/ 01
No Gearbox
Direct drive solution
No gearbox maintenance, no oil changes, no backlash. A compact design with nothing between the motor and the screw.
Explore
/ 02
220–400 V in the same motor
Reduced inventory cost
A star-delta reconnection covers both 230 V and 400 V supplies in the same motor — one variant for every export market. 110 V and 460 V versions are available.
Explore
/ 03
No Water Cooling
No cooling circuit
The motor stays cool enough to work without water. No pump, no piping, no monitoring — and no energy spent on cooling.
Explore
/ 04
Precise Extrusion
Stable from zero speed
Extremely low torque ripple and stable torque at ultra-low speeds — the foundation of consistent product quality.
Explore
/ 05
Quiet Operation
15 dB lower
On the measured line the SQME ran at 67 dB where a conventional geared AC drive reached 82 dB — a quieter floor for the people working on it.
Explore
03 — Structure
Anatomy ofthe SQME.
Five structural decisions inside one compact machine — everything an extrusion drive needs is built into the motor body, nothing bolted on in between.
01 / 05Self-cooled PM design · IP54
04 — Process Stability
Performance & Process Stability
Engineered for continuous, demanding extrusion operations
EMF direct drive extruder motors deliver exceptional torque consistency and speed stability, ensuring uniform melt pressure and product quality throughout the production cycle.
Constant Torque Output
Maintains consistent torque across the entire speed range, ensuring stable melt pressure and uniform extrusion output.
Vibration-Free Operation
Direct coupling eliminates mechanical vibrations from gearboxes, resulting in smoother extrusion and better product quality.
Rapid Response
Instant torque response to load changes enables precise control during startup, material changes, and speed adjustments.
Temperature Management
Lower heat generation compared to geared systems reduces thermal impact on the barrel zone, improving process stability.
Hollow Shaft Design
Optional hollow shaft configuration allows direct screw coupling, simplifying mechanical design and reducing footprint.
05 — Quiet Operation
A Quieter Working Environment
EMF Direct Drive Motors significantly reduce operating noise, helping create a quieter and more comfortable working environment in extrusion facilities.
By eliminating the gearbox, our direct drive technology removes a major source of mechanical noise.
In the comparison shown, the SQME extruder torque motor operated at 67 dB, compared with 82 dB for a conventional AC motor with a gearbox — a 15 dB reduction in measured noise level.
THE RESULT: quieter extrusion operations and greater operator comfort.
06 — Measured Efficiency
Efficiency across the working range
At full speed every drive looks efficient. Slow the line down and the difference shows: the SQME stays almost flat down to 20 rpm, while water-cooled torque motors and geared drives fall away. The slower your line runs, the wider the SQME's lead.
Extruder drive efficiency
Efficiency at reduced speed
Compare drive efficiency across the operating speed range.
Torque
40
No water cooling
No belt drive
No gearbox
Runs at very low speeds
Stable torque and speed
Curves redrawn from EMF Motor SQME catalogue measurements at 60%, 80% and 100% torque. The energy losses of the competitors' cooling systems are not considered in the efficiency calculation.
Energy Saving Comparison
EMF Motor vs 45 kW IE3 Geared Motor
Curves at 60 / 120 / 150 rpm. Calculated at 0.3 €/kWh, 340 days × 24 h continuous operation; based on actual test results. The geared system consumes an additional 0.5 kWh for its cooling and oil pump.
07 — No Water Cooling
No water. No pump. No cooler.
Water cooling adds system cost and complexity. The self-cooled SQME needs none of it.
Additional investment
Piping, cooler, controls and installation add cost.
Water treatment
Requires clean water and quality monitoring.
More maintenance
The cooling circuit needs regular inspection and upkeep.
Climate dependence
Operating conditions can affect motor performance.
Pump energy
The pump adds electricity use to the system.
Cooling-system risk
A failure may cause significant motor damage.
The energy losses of a water-cooled motor's cooling system are not included in the efficiency curves above.
08 — Case Study
Less energy.More output.
A measured retrofit on an HDPE extrusion line at a packaging manufacturer in Turkey: the motor, gearbox, belt drive and heat-exchanger pump were replaced by one direct drive.
BeforeAfter
≈25%Energy savedIn the comparison measured at 67 rpm
≈24%Higher screw speedAt the same energy consumption in the report
* The saving calculation includes the 0.55 kW heat-exchanger pump of the old system. Source: 2022–2023 field result reports. The results belong to the measured installation.
09 — The Range
Seven frames.One principle.
We customize your SQME exactly according to your torque and speed needs. Overview of the standard series — full data in the catalogue.
Motor Code
Pole Number
Pn(kW)
Mn(Nm)
nn(rpm)
Efficiency(%)
SQME 100
66
1.6 – 5.7
90 – 240
100 – 400
95.3
SQME 132
66
3.0 – 11.1
154 – 490
100 – 400
95.0
SQME 160
66
4.5 – 28.3
490 – 1,530
70 – 300
95.0
SQME 200 SE
88
11.0 – 51.3
1,100 – 3,500
70 – 200
95.7
SQME 250 SE
88
24.2 – 94.2
2,200 – 6,600
70 – 200
96.2
SQME 315 SE
110
61.6 – 169.6
6,240 – 11,000
70 – 200
95.5
SQME NEW
66
up to 250
up to 20,000
up to 200
up to 97
Full data, dimensions & 3D files
Complete SQME technical tables, options and performance diagrams. For 2D drawings and 3D step files contact info@emfmotor.com.
A direct drive extruder motor drives the screw without a gearbox or belt transmission. Torque is transferred directly to the screw shaft, reducing mechanical complexity and transmission losses.
Gearboxes and belt drives introduce mechanical losses, vibration, and wear components. A direct drive system simplifies the drivetrain, reduces downtime risk, and improves long-term reliability.
By eliminating mechanical transmission elements, torque is delivered more directly and consistently to the screw. This reduces torque fluctuation and mechanical backlash, supporting improved process stability, melt consistency, and more uniform product quality.
Yes. A more stable torque delivery allows better speed control and faster response to load changes. This can enhance process control, reduce scrap rates, and support higher production efficiency.
EMF direct drive motors are designed for high torque at low speeds, enabling extrusion processes without mechanical speed reduction systems while maintaining stable operation.
Yes. EMF motors are engineered for retrofit applications and can replace conventional gearbox or belt-driven systems, simplifying the mechanical layout. The extruder motor is low-maintenance; its externally relubricatable bearings require periodic lubrication according to the service schedule.
12 — Contact
Specify your torque.We size the motor.
Send us your required torque, speed and supply voltage — we configure the SQME exactly to your working point and deliver 2D drawings and 3D models.
